package main

import (
	"fmt"
	//"golang.org/x/tools/container/intsets"
)

func testSparse() {
	// TODO: need third-party library of "golang.org/x/tools/container/intsets"
	//s := intsets.Sparse{}
	//s.Insert(1)
	//s.Insert(10)
	//s.Insert(100)
	//fmt.Println(s.Has(10))
	//fmt.Println(s.Has(20))
}

func main() {
	testSparse()
	fmt.Println()
}
